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Von Duprin 388NL Night Latch Cylinder Trim for 33A/35A Series Exit Devices
Commercial-Grade Keyed Entry Trim with Reliable Interior Egress
The Von Duprin 388NL Night Latch Cylinder Trim is a heavy-duty, Grade 1 keyed trim engineered specifically for Von Duprin 33A and 35A Series exit devices. It provides key-operated access from the exterior while ensuring free, unobstructed egress from the interior — the right solution for exterior and secured door openings in commercial and institutional buildings. The non-handed design, 7 15/32" x 1 11/16" (190x43mm) base, and 1" (25mm) projection make it a precise, low-profile fit on standard commercial doors.
Key Features
- Night Latch Function: Key-operated exterior access with free interior egress — maintains code-compliant panic hardware operation at all times.
- 33A/35A Series Compatibility: Engineered exclusively for Von Duprin 33A and 35A Series exit devices; integrates with rim and vertical rod configurations.
- Grade 1 Heavy-Duty Construction: Rated Grade 1 for long-term reliability in high-traffic commercial and institutional environments.
- Non-Handed: Installs on either hand of door without handing-specific hardware, simplifying specification and field installation.
- Rim Cylinder Type: Accepts a standard rim-type cylinder (sold separately), allowing integration with existing master key systems or new keying programs.
- Available in 11 Finishes: Bright Brass (605), Satin Brass (606), Satin Bronze (612), Oil Rubbed Bronze (613), Satin Nickel (619), Bright Chrome (625), Satin Chrome (626), Matte Black (622), Aged Bronze (643E), Black Painted (693/SPBLK), and Dark Bronze (695/SP313).
Technical Specifications
- Model: 388NL
- Series: 33 & 35 Series
- Function: Night Latch Cylinder Trim
- Grade: Grade 1
- Duty Level: Heavy Duty
- Application: Commercial
- Compatibility: Von Duprin 33A/35A Series Exit Devices
- Pin Cylinder Type: Rim
- Base Size: 7 15/32" x 1 11/16" (190x43mm)
- Projection: 1" (25mm)
- Door Hand: Non-Handed
Typical Applications
- Commercial Office Buildings
- Educational Facilities
- Healthcare Institutions
- Retail Establishments
- Industrial and Warehouse Facilities
- Multi-Tenant Residential Properties
- Government and Municipal Buildings
Cylinder & Keying Notes
The 388NL accepts a standard rim-type cylinder, sold separately. It is compatible with most major cylinder manufacturers' rim cylinders, making it straightforward to incorporate into an existing master key system or to specify with a new keying program. Confirm cylinder projection requirements with your locksmith or hardware consultant before ordering. For full installation and compatibility details, refer to the Von Duprin 33A/35A Series Catalog.
Manufacturer Resources
Von Duprin 33A/35A Series Catalog
Product Specs
- Subcategory:
- Exit Device Trim
- Series:
- 33/35 Series
- Grade:
- Grade 1
- Duty Level:
- Heavy Duty
- Compatibilty:
- 33A/35A Series Exit Devices
- Product Group:
- Exit Devices and Trim
- Product Subgroup:
- Exit Device Trim
- Product Type:
- Exit Device Trims
- Commercial/Residential:
- Commercial
- Base Size:
- 7 15/32" x 1 11/16" (190x43mm)
- Tags:
- 388NL
- Product Model:
- 388
- Product Function:
- Night Latch Cylinder Trim
- Door Hand Direction:
- Non-Handed
- Pin Cylinder:
- Rim
- Product Projection:
- 1" (25mm)
- Product Category:
- Exit Devices and Trim
- Department:
- Door Hardware
Von Duprin 388NL 26D – Frequently Asked Questions
1) What is the Von Duprin 388 Night Latch Cylinder Trim used for?
The Von Duprin 388 provides cylinder trim functionality for 33A and 35A series exit devices. It allows key operation from the secure side while maintaining night latch operation. The trim enables controlled access without compromising emergency egress requirements.
2) Which Von Duprin exit devices is the 388 trim compatible with?
The 388 trim is specifically designed for Von Duprin 33A and 35A series exit devices. Verify your exit device model number before ordering. The trim will not fit other Von Duprin series without proper device compatibility.
3) Does the 388 trim require specific door handing?
Yes, specify door handing when ordering the 388 trim. Right hand or left hand designation determines proper cylinder placement and trim orientation. Verify door swing direction and hinge location to ensure correct operation.
4) What finishes are available for the Von Duprin 388 trim?
The 388 trim is available in standard Von Duprin finishes including aluminum, dark bronze, and others. Match the trim finish to your exit device finish for consistent appearance. Verify available finish options when placing your order.
5) What grade rating does the 388 night latch trim provide?
The Von Duprin 388 maintains the grade rating of the base 33A or 35A exit device when properly installed. The trim does not reduce the device's performance standards. Verify complete assembly meets required grade specifications for your application.
6) Does the 388 trim meet fire door code requirements?
When used with listed 33A or 35A exit devices, the 388 trim maintains fire door compliance. The assembly must match the door's fire rating requirements. Consult local codes and fire marshal requirements for specific applications.
7) What cylinder type does the 388 trim accommodate?
The 388 trim accepts standard mortise cylinders with appropriate cam configuration. Verify cylinder length and cam orientation match the trim requirements. The cylinder must be compatible with the exit device's locking mechanism.
8) Are special tools required to install the 388 trim?
Installation requires standard door hardware tools including drill, bits, and hand tools. Follow Von Duprin installation templates for proper positioning. Use manufacturer specifications for all hole locations and dimensions.
9) How is the 388 night latch trim maintained?
Maintain the 388 trim through regular cleaning and lubrication of cylinder mechanism. Check trim attachment and alignment periodically. Follow Von Duprin maintenance guidelines for optimal performance and longevity.
10) What other Von Duprin trim options work with 33A and 35A devices?
Von Duprin offers various trim options for 33A and 35A series including lever trims, pull trims, and other cylinder configurations. Browse our Von Duprin collection for compatible trim alternatives and complete exit device solutions.
11) Can the 388 trim be field-installed on existing exit devices?
Yes, the 388 trim can be added to existing compatible 33A and 35A exit devices. Verify the device is properly prepared for trim installation. Some field modification may be required following manufacturer specifications.
12) What door thickness range does the 388 trim accommodate?
The 388 trim accommodates standard door thickness ranges compatible with 33A and 35A exit devices. Verify door thickness falls within device specifications. Check manufacturer documentation for exact thickness requirements and trim adjustments.
How fast can I get the Von Duprin 388NL 26D delivered?
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Does the Von Duprin 388NL 26D come with a warranty?
Absolutely. The Von Duprin 388NL 26D is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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